Protrusion-Tab Filter Structure for Secure Holder Engagement

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Solution Overview

Problem

There is a demand for a filter that can be easily held and used in filtration devices.

Innovation Solution

A filter design featuring a filter part with through-holes, a frame portion, and a tab with protrusions, which is held by a holder with cylindrical shapes and inner flanges, allowing secure attachment through protrusions on the tab.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If a filter is designed with a simple structure, then manufacturing is easier, but the filter cannot be firmly held and may cause clogging

Engineering Contradiction:

Improvefilter structure simplicityVSAvoidholding stability

Core Design Contradiction:

Ease of manufactureVSReliability

Solution Approach 1:

The filter is divided into distinct functional components: a filter part with through-holes for filtration, a frame portion for structural support, and a tab with protrusions for holding. This segmentation allows each component to be optimized independently while maintaining overall simplicity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The tab with protrusions is integrated directly onto the filter part, allowing the filter to be self-held without requiring external holding structures. The protrusions on the tab engage with the holder to provide automatic positioning and secure holding.

Inventive Principle:

Principle #25Self-service

2Reliability

If a tab with protrusions is added to the filter, then the filter can be firmly held, but the device complexity increases

Engineering Contradiction:

Improveholding stabilityVSAvoidfilter structure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The tab with protrusions is merged with the filter part as a single integrated component. This combining of the holding function with the filter structure avoids adding separate holding mechanisms, thereby limiting the increase in overall device complexity.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The tab acts as an intermediary element between the filter part and the holder. It translates the holding function into a simple geometric interface with protrusions that engage with the holder's recesses, providing secure holding without complex mechanisms.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the filter is made with through-holes for filtration, then filtration efficiency is improved, but the filter becomes more susceptible to clogging

Engineering Contradiction:

Improvefiltration efficiencyVSAvoidclogging resistance

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The frame portion is designed with different properties from the filter part: it has fewer through-holes and provides structural reinforcement at the periphery. This local quality differentiation maintains filtration efficiency in the filter part while providing clogging resistance through the frame structure.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The tab is designed with a curved or rounded geometry that allows it to flex slightly under pressure. This curvature enables the tab to accommodate minor deformations without causing clogging, while still maintaining effective filtration through the through-holes.

Inventive Principle:

Principle #14Spheroidality (Curvature)

Data Source

PatentUS20250296022A1Filter and filter device

Publication Date: 2025.09.25 MURATA MFG CO LTD

AI summary

A filter that includes: a filter part having a plurality of through-holes; a frame portion on an outer periphery of the filter part; and a tab that protrudes from an outer periphery of the frame portion, the tab having a plurality of protrusions.